When combined with responsible woodlot management, wood heat has the potential to be a near net-zero carbon emitting energy source. Trees take up CO2 as they grow, and re-release it when burned. The only additional CO2 emissions are those generated by harvesting & transporting the wood.

If you haven't heard of masonry heaters, you're in for a pleasant surprise.

Ron Peters, who lives on Greenland Road, built this solar wall to heat his garage. A search for solar walls in Google or Youtube will yield lots of other examples. Following are some photos showing his work: